Driving mechanism for washing-machines.



H. S. JUDD & H. PLETSCH'. DRIVING MECHANISM FOR WASHING MACHINES.

APPLICATION FILED FEB- 10, 1910.

1,147,406., Patented July 20, 1915.

2 SHEETS-SHEET I.

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H. 3.1mm & H. PLETSCH.

DRIVING MECHANISM FOR WASHING MACHINES. APPLICATION FILED FEB. 10, WW.17,406, Patented July 20, 1915.

2 SHEETS-SHEET 2- HENRY S. J UDD AND HENRY IPLETSCH, OF CHICAGO,ILLINOIS, ASSIG-NORS '10 JUDD LAUNDRY MACHINE COMPANY, OF CHICAGO,ILLINOIS A CORPORATION OF DELA- WARE.

DRIVING- MECHANISM FOR WASHING-MACHINES.

Specification of Letters Patent.

- Patented July 20, 1915.

Original application filed March 4, 1907, Serial No. 360,400. Dividedand this application filed February 10, 1910. Serial Iva-543,105.

oscillate upon a horizontal axis below the center of gravity.

The present application is acontinuation in part of an earlierapplication filed by us March 4, 1907, Serial N 0. 360,400.

The invention consists in the features of improvement hereinafter setforth, illustrated in the preferred form in the accompanying drawingsand more particularly pointed out in the appended claims.

In the drawings, Figure 1 is an end elevation with parts broken away;Fig. 2, a section on the line 2-2 of .Fig. 1; Fig. 3, a detail of amodification.

Like parts are indicated by the same letters in all the figures.

The tub A has the rigid end pieces A provided with the lining panels Ato which is attached the sheet A making up the sides, bottom and part ofthe top of the tub. The sheet A overlaps the crimpedi edges A of thepanels A and is held upon the ends A by means of the screws At.

The frame B which rests upon the ends A and is riveted at the sides tothe sheet A is provided with the downwardly depending L-shaped flange Bhaving therein the packing B The door B having the downwardly dependingflanges B adapted to engage the packing B is held in the tub by means ofthe screws B adjustably mounted in the lever B and riding upon thetapered lugs B upon the door. The lever B is held by means of the screw13 and the lug B upon the body of the tub. The plates 0 having theinwardly-turned bottom flange C are held by means of the bolts C to theend pieces A and are provided with the trunnion C and shaft G other areconnected by means of the bolt D,

the knife edge D nut D and lug D to the frame C The driving spring E isattached at one end to the tub by means of the bolt E and knife edge Eand at the other end to the lever E which is rotatably mounted upon theshaft C The knife edge E bears upon the upper surface of the laterallyprojecting part 6* of a bracket E that is suitably bolted to the endwall of the tub, and the bolt E is shown as passing through thelaterally projecting part of the bracket E and through the knife edge EThe lever E is connected by means of the rod G to the crank G which ismounted upon the shaft G and driven by means of the belt G and pulley Gtached at one end to the lever D and has at the other end the plug Hslidably mounted within which, is the rod H having at its end the head Hadapted to engage the plug H.

Referring to Fig. 3, the spring J incloses the spring J and has at oneend the plug J 2 which engages both the inner and springs. At the otherend the plug J engages the spring J and is rigidly attached to the boltJ The plug J engages the spring J and is held slidably mounted upon thebolt J 4 and adapted to engage the head J upon such bolt.

The spring illustrated in Fig. 3 may be used as a substitute for thesprings shown in Figs. 1 and 2 if such arrangement should seemdesirable.

It will be evident that although we have shown in our drawings anoperative struc-' ture, still numerous changes could be made in theshape, size and arrangement of parts without departing materially fromthe spirit of our invention. The springs might be interchanged andnumerous other changes might be made.

The use and operation of our invention are as followsz-Ne provide a tubwhich os- The spring D is atouter Y 1 i fall independentof the springs.

- continues until the lug is carried around to auxiliary checkingsprlngs;

' connection of the metal parts.

undue tension on cillates about an axis below the center of gravity,said axis relatively near the bottom of the tub. The shape of the tub issuch that as oscillation takes .place, the water therein describes apath essentially difierent from that of the tub. In other words, thewater in the tub is reflected from surface to surface as the tuboscillates. The tub is made up of rigid ends preferably of wood havingmetallic linings partially overlapping the wood with a metallic sidesheet com-v pletely surrounding the edges of the wooden ends andsoldered to the end linings. By this arrangement we are enabled to nailor screw the metal part to the wooden part of the tub withoutinterfering with the soldered It should be noted that the driving springE is interposed between the lever E which extends upwardly from itspivot, and the tub, and in. the preferred embodimentof the invention setforth, the axis ofthe pivot of the lever coincides with that of the tuband the spring extends between the upper end ofv the lever and the upper.portion of the tub. This arrangement allows the tub to oscillatethrougha larger arc than the lever, without placing the driving spring. In thepreferred embodiment shown, the in chned retracting springs areconnected to a pivot plate on the axis of the'tub and the latterprovided with a pin which reengages an arc-shaped slot in the pivotplate. By this means the tub has a certain free gravity This fall theend of the slot whereupon the retracting springs come into play. This isprovided so that when the tub is running light it Wlll ,still be enabledto get sufficient momentum in each stroke to do the necessary workwithout undue jar and strain upon the driving mechanism. Thus, as thetub is started the connecting rod throws the driving lever out of linebetween the point of application on the tub and the axis, thus exertingtension upon the driving spring. In the devices where the springs tendat all times to maintain the tub central, the driving mechanism mustimmediately commence work against these retracting springs. In thisdevice, however, the driving mechanism is not called upon to overcomethe tension of the springs at the start of the stroke where themechanical advantage is least. We have shown that is to say, in one casethree springs, two of which are constantly operative, a third operativemerely when the elongation of the other two has reached a certain point.We have shown also springs one within the other wherein the outer springis stretched until the head on the rod engages a plug in the innerchecking spring to put it to work. This secondary spring may be termed achecking tory movements ia-mos spring since it becomes active onlytoward the end of the stroke and tends to prevent and reversing the tubwith a minimum of a too great travel, at the same time stopping jar andresulting strain on the mechanism.

1. Driving means for a washing tub comprising a frame having suitablebearings, trunnions projecting laterally from said tub near the bottomthereof and supported by said bearings, alever pivotally mounted uponone of said trunnions and extending upwardly therefrom, a driving rodconnected to said lever and a driving spring connected at its lower endto the upper portion of said lever and extending upwardly therefrom,said spring being connected at its upper end to the tub. v

2. Driving means for a washing tub comprising a frame having suitablebearings, trunnions projecting laterally from said tub near the bottomthereof and supported by said bearings, a lever pivotally mounted uponone of said trunnions and extending upwardly therefrom, a driving rodconnected to the upper portion of said lever, a driving spring connectedat its lower end to the upper portion of said lever, a bracket connectedto the upper portion of the tub and. having a laterally projecting part,a knife-edge bearing upon the laterally projecting part of said bracket,and a rod passing through said laterally projecting portion of thebracket and connected to said knifeedge, the lower end of said rod beingadjustably connected to the upper end of said driving spring.

3. Driving means for a washing tub comprising a frame having suitablebearings, trunnions projecting laterally'from said tub near the bottomthereof and supported by said bearings, a lever mounted for oscillaabouta horizontal axis and extending upwardly therefrom, a driving rodconnected to the upper portion of said lever, and a driving springconnected at its lower end to the upper portion of said lever andextending upwardly therefrom, said spring being connected at its upperend to the tub.

4. Driving means for washing tubs, comprising aframe on which the tub ismounted so as to oscillate about a fixed horizontal axis near the bottomthereof, a plate rotatably mounted about said axis, said plate providedwith an arc-shaped slot therein, a lug rigidly attached to the tubadapted to engage in said slot, a plurality of retracting springsattached at their one end to the frame and at their other end to thesaid plate, and means to impart an oscillatory motion to the tub.

5. Driving means for washing tubs, comprising a frame on which the tubis mounted so as to oscillate about a fixed horizontal axis near thebottom thereof, a lever rotatably mounted about said axis, a springattached to the tub at one end and to said lever at the other end, aplate rotatably mounted about the horizontal axis, said plate providedwith an arc-shaped slot therein, a lug rigidly attached to the tubadapted to engage in said slot, and a plurality of retracting springsattached at one end to the frame and at the other end to said plate.

6. Driving means for'washing tubs, comprising a frame on which the tubis mounted so as to oscillate about a fixed horizontal axis near thebottom thereof, a triangular plate rotatably mounted at its apex aboutsaid axis, a slotted connection between said plate and tub, retractingsprings attached at one end to the frame and at the other end to the tworemaining apexes of the plate, and means to impart an oscillatory motionto the tub,

CI. Driving means for washing tubs, com

prising a frame on which the tub is mounted about a fixed horizontalthereof, a plate rotaso as to oscillate axis near the bottom tablymounted about connection between said tub and plate, levers pivoted tosaid plate, and a retracting member for the tub comprising a pluralityof springs connected at one end to the frame and at the other end tosaid levers, and

such axis, a slotted mtgans to impart an oscillatory motion to the tu 8.In a machine of the character set forth, the combination of a frame, abody pivoted thereon to oscillate about a horizontal axis below itscenter of gravity, a lever pivotally mounted to oscillate about an axiscoinciding with the axis of said bod ,said lever extending upwardly fromits axis, a spring connected'at its lower end to the upper portion ofsaid lever and extending upwardly therefrom, said spring being connectedat its upper end to said body, a driving rod connected to said lever,and retractin springs connected to said body for reversing the movementthereof.

9. In a machine of the character set forth, the combination of a frame,a body pivoted thereon to oscillate about a horizontal axis below saidcenter of gravity, retracting springs connected to said body to reversethe movements thereof, a lever mounted to oscillate about a horizontalaxis and extending upwardly therefrom, a driving rod connected to saidlever, and a driving spring connection between said lever and said body.

HENRY S. JUDD. HENRY PLETSCH. Witnesses:

FRANCIS W. PARKER, Jr., MINNIE M. LINDENAN.

